Move LayerTreeResourceProvider to viz/client/ as ClientResourceProvider

As the LayerTreeResourceProvider now has no cc-specific things to it,
we can move it to viz/client/ where it is clear to be used by any and
all viz clients. It's renamed to not refer to LayerTree anymore also.

R=kylechar@chromium.org, pdr@chromium.org
TBR=thakis

Bug: 722935
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel;master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: I07546622ad5482bf050403f8d6fe30769a05f4f4
Reviewed-on: https://chromium-review.googlesource.com/1073611
Reviewed-by: danakj <danakj@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Reviewed-by: kylechar <kylechar@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: danakj <danakj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#562445}

diff --git a/cc/raster/zero_copy_raster_buffer_provider.cc b/cc/raster/zero_copy_raster_buffer_provider.cc
index fd2bb21..bcd13f2 100644
--- a/cc/raster/zero_copy_raster_buffer_provider.cc
+++ b/cc/raster/zero_copy_raster_buffer_provider.cc

@@ -11,8 +11,8 @@
 #include "base/macros.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
-#include "cc/resources/layer_tree_resource_provider.h"
 #include "cc/resources/resource_pool.h"
+#include "components/viz/client/client_resource_provider.h"
 #include "components/viz/common/gpu/context_provider.h"
 #include "components/viz/common/resources/platform_color.h"
 #include "components/viz/common/resources/resource_format_utils.h"
@@ -147,7 +147,7 @@
     gl->BindTexture(backing_->texture_target, 0);
 
     backing_->mailbox_sync_token =
-        LayerTreeResourceProvider::GenerateSyncTokenHelper(gl);
+        viz::ClientResourceProvider::GenerateSyncTokenHelper(gl);
     backing_->gpu_memory_buffer = std::move(gpu_memory_buffer_);
   }